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Table 5 Combining diagnostic and drug information to identify patients with diabetes and heart disease.

From: The potential of electronic medical record systems to support quality improvement work and research in Norwegian general practice

Diabetes

Heart disease

Practice

No. ICPC /No. ATC

Overlap

% identified by ICPC

Practice

No. ICPC /No. ATC

Overlap

% identified by ICPC

A

143 / 99

89

94

A

147 / 79

46

82

B

20 / 15

12

87

B

6 / 7

2

55

C

4 / 2

2

100

C

7 / 1

0

88

D

82 / 57

52

94

D

176 / 103

70

84

E

23 / 16

13

89

E

23 / 7

4

89

F

25 / 16

15

96

F

57 / 33

27

91

G

111 / 77

74

97

G

161 / 110

59

76

H

30 / 11

11

100

H

19 / 16

9

73

I

31 / 14

13

97

I

32 / 11

7

89

J

141 / 84

73

93

J

214 / 147

77

75

K

61 / 37

35

97

K

108 / 60

43

86

L

91/ 51

50

99

L

101 / 72

50

82

M

33 / 23

23

100

M

35 / 17

7

78

N

12 / 10

8

86

N

19 / 20

7

59

  1. ICPC = InternationalClassification for Primary Care (coding system for diagnoses) ATC = Anatomical Therapeutical Chemical (coding system for drugs)